JPH079038Y2 - In-furnace measurement window purging device - Google Patents
In-furnace measurement window purging deviceInfo
- Publication number
- JPH079038Y2 JPH079038Y2 JP1988137612U JP13761288U JPH079038Y2 JP H079038 Y2 JPH079038 Y2 JP H079038Y2 JP 1988137612 U JP1988137612 U JP 1988137612U JP 13761288 U JP13761288 U JP 13761288U JP H079038 Y2 JPH079038 Y2 JP H079038Y2
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- furnace wall
- wall opening
- measurement window
- perforated plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は炉内計測窓パージ装置に係わり、特に炉内への
投光器又は炉内よりの受光器のシールガラスが炉内ガス
や粉塵により汚れることを防止するのに好適なパージ装
置に関する。[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an in-furnace measurement window purging device, and in particular, the sealing glass of a projector into a furnace or a light receiver from inside the furnace is contaminated by gas or dust in the furnace. The present invention relates to a purge device suitable for preventing such a situation.
炉内CPC装置（帯状走行物の中心位置等の位置制御装
置）を炉外から投光したり受光するため炉壁に開口し、
この開口部を透明なシールガラスでシールして光のみ通
過するようにし、その他のガス、粉塵等が炉外に放出し
ないよう遮断する必要がある。このため従来より、例え
ば、第２図に示す構造が採用されている。炉壁１に炉壁
開口２を設け、炉壁開口２の炉外側に箱状のシール部３
を設ける。シール部３の炉壁開口２と対向する面に開口
４を設けシールガラス５で炉内とシールする。そしてシ
ール部３の周囲壁にパージガス流入用開口６をパージガ
スがシールガラス５の内面に吹き付けるように設け、シ
ールガラス５が炉内のガスや粉塵で汚れるのを防止す
る。炉内CPC装置投光用のランプ７をその計測光軸８が
炉内CPC装置に照射されるようシールガラス５の外側に
設ける。The CPC device inside the furnace (position control device for the center position of the belt-shaped traveling object) is opened in the furnace wall to project and receive light from outside the furnace,
It is necessary to seal this opening with a transparent sealing glass to allow only light to pass therethrough, and to block other gases, dust, etc. from being emitted outside the furnace. Therefore, conventionally, for example, the structure shown in FIG. 2 has been adopted. A furnace wall opening 2 is provided in the furnace wall 1, and a box-shaped sealing portion 3 is provided outside the furnace wall opening 2 in the furnace.
To provide. An opening 4 is provided on the surface of the seal portion 3 facing the furnace wall opening 2, and the inside of the furnace is sealed with a seal glass 5. A purge gas inflow opening 6 is provided on the peripheral wall of the seal portion 3 so that the purge gas blows against the inner surface of the seal glass 5 to prevent the seal glass 5 from being contaminated with gas and dust in the furnace. The lamp 7 for projecting the in-furnace CPC device is provided outside the seal glass 5 so that the measurement optical axis 8 of the lamp 7 is irradiated to the in-furnace CPC device.
上記従来技術において、シールガラス５へのパージガス
の吹き付けが、パージガス流入用開口６の数や位置、パ
ージガス流量を調整してもパージガスの流れに乱れが生
じ、炉内ガスの巻き込みを誘発しシールガラス５の汚れ
を発生させていた。In the above-mentioned conventional technique, the blowing of the purge gas onto the seal glass 5 causes turbulence in the flow of the purge gas even if the number and position of the purge gas inflow openings 6 and the flow rate of the purge gas are adjusted, which induces the entrainment of the gas in the furnace to induce the seal glass. The stain of 5 was generated.
このため、頻繁にシールガラスの清掃が必要であり、炉
の操業及び保守に支障をきたしていた。Therefore, it is necessary to frequently clean the seal glass, which hinders the operation and maintenance of the furnace.
本考案の目的は、シール部内に多孔板と整流ノズルを設
けるという簡単な構造を用いることによりシールガラス
の汚れの少ないパージ装置を提供することにある。An object of the present invention is to provide a purging device in which the sealing glass is less contaminated by using a simple structure in which a perforated plate and a rectifying nozzle are provided in the sealing portion.
上記課題は、炉壁開口部の炉外側に筺体を設け、前記炉
壁開口部と対向する該筺体の面に透明のシール材よりな
る計測窓を設け、前記筺体にパージガスを流入し前記透
明のシール材を炉内からの汚染に対し保護する炉内計測
窓パージ装置において、前記筺体内部であって前記炉壁
開口部に、計測光軸に平行な多数の開孔を有する多孔板
と、該多孔板の上流側に前記透明のシール材と所定の間
隔を設けて整流ノズルとを設けた炉内計測窓パージ装置
によって達成される。The above-mentioned problem is to provide a casing on the outside of the furnace wall opening, provide a measurement window made of a transparent sealing material on the surface of the casing facing the furnace wall opening, and introduce a purge gas into the casing to make the transparent In an in-furnace measurement window purging device that protects a sealing material against contamination from the inside of the furnace, a porous plate having a large number of openings parallel to the measurement optical axis in the furnace wall opening inside the housing, This is achieved by an in-furnace measurement window purging device in which the transparent sealing material and a rectifying nozzle provided at a predetermined interval are provided on the upstream side of the porous plate.
上記構成により、筺体の周囲壁の開口より流入したパー
ジガスはまず整流ノズルとシール材との間の流路より多
孔板に向かって整流され、次に計測光軸に平行な多数の
開孔を通り炉内に流入する。このように整流されたパー
ジガスの流れによりシール材内表面は覆われているため
炉内ガスや粉塵がシール材内表面に当たらなくなりシー
ル材内表面は清浄に保たれる。また多孔板の開孔は計測
光軸に平行であり、多数開孔されているので投光、受光
上の支障は少ない。With the above structure, the purge gas flowing in through the opening of the peripheral wall of the housing is first rectified through the flow path between the rectifying nozzle and the sealing material toward the perforated plate, and then passes through a large number of apertures parallel to the measurement optical axis. It flows into the furnace. Since the inner surface of the seal material is covered by the flow of the purge gas thus rectified, the furnace gas and dust do not hit the inner surface of the seal material and the inner surface of the seal material is kept clean. Further, since the apertures of the perforated plate are parallel to the measurement optical axis and a large number of apertures are formed, there is little trouble in light projection and light reception.
以下本考案の一実施例を第１図を用いて説明する。 An embodiment of the present invention will be described below with reference to FIG.
第１図は本実施例の横断面を示す。本実施例は炉壁１に
開口された長方形の炉壁開口２が設けられている。パー
ジ部３は炉壁開口２を十分覆う大きさの円筒体で構成さ
れ、炉壁１とは炉壁開口２と同じ開口を有する取り付け
板９により炉壁外面にボルトで固着されている。パージ
部３円筒体頂板には投光または受光用開口４が設けら
れ、シールガラス５で開口４をシールし、炉内のガス、
粉塵等が外部に漏洩するのを防止する。パージ部３の円
筒体部にはパージガス流入用開孔６が円筒体周囲に設け
られている。投光用ランプ又は受光素子７は計測光軸８
上に配設されている。本考案になる多孔板11は取り付け
板９の開口部を覆うように設けられ、この多孔板11の上
に炉壁開口２の形状とほぼ同じ長方形の整流ノズル10が
シールガラス５と所定の間隔を設けて取り付けられてい
る。FIG. 1 shows a cross section of this embodiment. In this embodiment, a rectangular furnace wall opening 2 opened in the furnace wall 1 is provided. The purging unit 3 is composed of a cylindrical body having a size enough to cover the furnace wall opening 2, and is fixed to the furnace wall outer surface with bolts by a mounting plate 9 having the same opening as the furnace wall opening 2. Purge part 3 The top plate of the cylindrical body is provided with an opening 4 for projecting or receiving light, and the opening 4 is sealed with a seal glass 5 so that gas in the furnace
Prevents dust from leaking outside. A purge gas inflow opening 6 is provided around the cylinder in the cylinder of the purge unit 3. The projection lamp or the light-receiving element 7 has a measurement optical axis 8
It is located above. The perforated plate 11 according to the present invention is provided so as to cover the opening of the mounting plate 9, and a rectangular rectifying nozzle 10 having substantially the same shape as the furnace wall opening 2 is provided on the perforated plate 11 at a predetermined distance from the seal glass 5. Is installed.
次にパージガスの動作について説明する。Next, the operation of the purge gas will be described.
パージ部３の円筒体の周囲にほぼ均等に複数個設けられ
たパージガス流入用開孔６より流入したパージガスはシ
ールガラスに当たり方向を変えて整流ノズル10に整流さ
れて流入する。次に多孔板11の各孔を通り、ほぼ平行流
となって炉内に流れ込む。このため炉内よりのガスや粉
塵はシールガラス５の内面に殆ど当たることがなく、シ
ールガラス５の内面は清浄に保たれる。多孔板11はパー
ジガスを整流すると共に、投光または受光を透過させる
働きもする。光の通過量を大きくするためには孔の総面
積はできるだけ大きい方がよいが、パージガスの整流作
用上からは、あまり大きいとその整流効果が小さくな
る。開孔率を多孔板11の孔総面積を炉壁開口２の面積で
除した値とし、開孔率を種々変えて整流作用のテストを
した結果、開孔率35％ぐらいで整流作用がよく、50％に
すると整流作用がかなり落ちることが判明した。また整
流ノズル10とシールガラス５との間隔はパージガスの流
れを乱さない程度に接近させると効果的である。A plurality of purge gas inflow openings 6 provided substantially evenly around the cylindrical body of the purge unit 3 flow into the flow straightening nozzle 10 by changing the direction and hitting the seal glass. Then, it passes through each hole of the perforated plate 11 and flows into the furnace in a substantially parallel flow. Therefore, gas and dust from the inside of the furnace hardly hit the inner surface of the seal glass 5, and the inner surface of the seal glass 5 is kept clean. The perforated plate 11 functions not only to rectify the purge gas but also to transmit the projected light or the received light. The total area of the holes should be as large as possible in order to increase the amount of light passing through. However, from the viewpoint of the rectifying action of the purge gas, if it is too large, the rectifying effect will be reduced. The porosity is defined as a value obtained by dividing the total area of the holes of the perforated plate 11 by the area of the furnace wall opening 2, and the rectification effect was tested by varying the porosity. It was found that the rectifying effect was considerably reduced when the ratio was set to 50%. Further, it is effective to make the distance between the flow straightening nozzle 10 and the seal glass 5 close to each other so as not to disturb the flow of the purge gas.
また、多孔板11を透明の材料で製作すれば、透過光につ
いては有利であるが、炉内ガス等で汚れ透明度が低下し
てくるので、不透明体で製作した方がよい。Also, if the perforated plate 11 is made of a transparent material, it is advantageous for transmitted light, but since it becomes less transparent due to contamination with the gas in the furnace, it is better to make it of an opaque body.
本実施例は，炉内CPC装置に対するものであるが、一般
の加熱炉等で炉内の監視が必要な場合、その観測窓又
は、照明窓に適用できることは勿論である。Although the present embodiment is directed to the in-furnace CPC device, it is needless to say that it can be applied to the observation window or the illumination window when it is necessary to monitor the inside of the ordinary heating furnace or the like.
本考案によれば、炉内計測窓のパージ部内の炉壁開口部
に、計測光軸に平行な多数の開孔を有する多孔板と、こ
の多孔板の上側側に整流ノズルを設けることにより所定
の透過光量を確保しつつパージガスを整流して炉内ガス
や粉塵を炉内計測窓のシール材に近づけないので、シー
ル材の清浄度が維持でき、炉の操業性、保守性を向上す
ることができる。According to the present invention, a perforated plate having a large number of apertures parallel to the measurement optical axis is provided at the furnace wall opening in the purge part of the in-furnace measurement window, and a rectifying nozzle is provided on the upper side of the perforated plate. Since the purge gas is rectified and the furnace gas and dust are not brought close to the seal material of the measurement window inside the furnace while ensuring the amount of transmitted light of the furnace, the cleanliness of the seal material can be maintained and the operability and maintainability of the furnace can be improved. You can
また、高温の炉内ガスがシール材まで到達しないのでシ
ール材の耐熱性、および投光器又は受光器全体の冷却が
簡単になりコストの低減ができるという効果もある。Further, since the high-temperature furnace gas does not reach the sealing material, there is an effect that the sealing material has heat resistance, and the entire projector or light receiver can be easily cooled to reduce the cost.
第１図は本考案になる一実施例の横断面図、第２図は従
来技術を示す横断面である。 １……炉壁、２……炉壁開口、３……パージ部、４……
投光または受光用開口、５……シールガラス、６……パ
ージガス流入用開孔、７……投光用ランプまたは受光素
子、８……計測光軸、９……取り付け板、10……整流ノ
ズル、11……多孔板FIG. 1 is a cross-sectional view of an embodiment according to the present invention, and FIG. 2 is a cross-sectional view showing the prior art. 1 ... Furnace wall, 2 ... Furnace wall opening, 3 ... Purging section, 4 ...
Light or light receiving opening, 5 ... Seal glass, 6 ... Purge gas inflow opening, 7 ... Light emitting lamp or light receiving element, 8 ... Measuring optical axis, 9 ... Mounting plate, 10 ... Rectification Nozzle, 11 ... perforated plate
Claims (1)
壁開口部と対向する該筺体の面に透明のシール材よりな
る計測窓を設け、前記筺体にパージガスを流入し前記透
明のシール材を炉内からの汚染に対し保護する炉内計測
窓パージ装置において、前記筺体内部であって前記炉壁
開口部に、計測光軸に平行な多数の開孔を有する多孔板
と、該多孔板の上流側に前記透明のシール材と所定の間
隔を設けて整流ノズルとを設けたことを特徴とする炉内
計測窓パージ装置。1. A casing is provided outside the furnace wall opening, and a measuring window made of a transparent sealing material is provided on a surface of the casing facing the furnace wall opening, and a purge gas is introduced into the casing to make the transparent. In the in-furnace measurement window purging device that protects the sealing material from contamination from the inside of the furnace, in the furnace wall opening inside the housing, a perforated plate having a large number of holes parallel to the measurement optical axis, An in-furnace measurement window purging device, characterized in that a rectifying nozzle is provided on the upstream side of the perforated plate with the transparent sealing material at a predetermined interval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988137612U JPH079038Y2 (en) | 1988-10-21 | 1988-10-21 | In-furnace measurement window purging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988137612U JPH079038Y2 (en) | 1988-10-21 | 1988-10-21 | In-furnace measurement window purging device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0258700U JPH0258700U (en) | 1990-04-26 |
| JPH079038Y2 true JPH079038Y2 (en) | 1995-03-06 |
Family
ID=31399193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988137612U Expired - Lifetime JPH079038Y2 (en) | 1988-10-21 | 1988-10-21 | In-furnace measurement window purging device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH079038Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5895263B2 (en) * | 2014-01-22 | 2016-03-30 | 広島県 | Anti-stain device for observation window |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6152200U (en) * | 1984-09-07 | 1986-04-08 |
-
1988
- 1988-10-21 JP JP1988137612U patent/JPH079038Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0258700U (en) | 1990-04-26 |
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